diff --git a/src/lib.rs b/src/lib.rs
index 094322d..8370d45 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -65,8 +65,7 @@ use crate::ecss::CCSDS_HEADER_LEN;
 use core::fmt::{Debug, Display, Formatter};
 use crc::{Crc, CRC_16_IBM_3740};
 use delegate::delegate;
-#[cfg(not(feature = "std"))]
-use num_traits::Unsigned;
+
 #[cfg(feature = "std")]
 use std::error::Error;
 
diff --git a/src/time/cuc.rs b/src/time/cuc.rs
index 3f93080..22d3b6f 100644
--- a/src/time/cuc.rs
+++ b/src/time/cuc.rs
@@ -3,7 +3,6 @@
 //!
 //! The core data structure to do this is the [TimeProviderCcsdsEpoch] struct.
 use super::*;
-use crate::time::std_mod::StdTimestampError;
 use chrono::Datelike;
 use core::fmt::Debug;
 use core::ops::{Add, AddAssign};